Assembly and method for the preparation of a wound dressing

Abstract

The present disclosure provides a wound dressing assembly comprising (i) a blood-clotting mold device with a mold cavity for forming a molded blood clot for use in dressing a wound. Prior to extraction, the molded blood clot is pushed towards the mold cavity's interior, which causes the molded blood clot to disassociate from the cavity walls and thereafter it can be removed with none or only minimal damage to its integrity.

The invention claimed is: 
     
       1. An assembly for preparing a blood clot-comprising wound dressing, the assembly comprises
 a blood-clotting mold device having a mold cavity defined between walls of a main body and a removable closure over an opening and is configured for introduction of blood thereinto, 
 a coagulation initiator in an amount sufficient to coagulate blood introduced into the enclosure to form a molded blood clot, and 
 an auxiliary device configured for pushing the molded blood clot in a direction towards the interior of the mold cavity. 
 
     
     
       2. The assembly of  claim 1 , wherein said auxiliary device has a circumferential clot engaging member. 
     
     
       3. The assembly of  claim 2 , wherein said clot-engaging member has dimensions corresponding to those of the mold cavity for engaging the periphery of the molded blood clot. 
     
     
       4. The assembly of  claim 2 , wherein said member projects from a body of said device. 
     
     
       5. The dressing assembly of  claim 1 , wherein said coagulation initiator is comprised within the mold cavity, wherein at least one of the walls of the mold cavity and closure is pierceable by needle, and wherein the mold cavity contains a blood-clot support matrix. 
     
     
       6. A method for preparing a wound dressing, comprising:
 introducing a volume of blood into a mold cavity of a blood-clotting mold device; 
 maintaining the blood within the enclosure for a time sufficient to permit clotting of the blood to thereby obtain a molded blood clot; 
 removing said closure to open the mold cavity; 
 pushing the molded blood clot in a direction towards the mold cavity's interior to thereby separate the molded blood clot's periphery from walls of the mold cavity; and 
 extracting the blood clot from the mold cavity and combining it with a wound dressing material. 
 
     
     
       7. The method of  claim 6 , wherein said pushing is carried out with an auxiliary device configured for that purpose. 
     
     
       8. The method of  claim 7 , wherein said auxiliary device has a circumferential clot engaging member. 
     
     
       9. The method of  claim 8 , wherein said clot-engaging member has dimensions corresponding to those of the mold cavity for engaging the periphery of the molded blood clot. 
     
     
       10. The method of  claim 8 , wherein said member projects from a body of said device. 
     
     
       11. The method of  claim 10 , comprising combining the blood clot onto a dressing material. 
     
     
       12. The method of  claim 8 , wherein the mold cavity comprises a blood clot-support matrix and said clotting causes said matrix to become integrated within the molded blood clot, where said extracting comprises removal of the clot with said matrix, wherein at least one of (i) the walls of the mold cavity and (ii) the removable closure, is pierceable by a needle, and wherein said introducing comprises piercing at least one of the wall and closure and injecting the blood therethrough. 
     
     
       13. The method of  claim 8 , wherein the closure is a removable film, wherein the enclosure has the general shape of a blister, and wherein the enclosure is first pierced to form a vent and then the blood is injected. 
     
     
       14. A method for dressing a wound, comprising:
 introducing a volume of blood into a mold cavity of a blood-clotting mold device; 
 maintaining the blood within the enclosure for a time sufficient to permit clotting of the blood to thereby obtain a molded blood clot; 
 removing said closure to open the mold cavity; 
 pushing the molded blood clot in a direction towards the mold cavity's interior to thereby separate the molded blood clot's periphery from walls of the mold cavity; 
 extracting the blood clot from the mold cavity and combining it with a wound dressing material; and 
 fixing the blood clot onto the wound. 
 
     
     
       15. The method of  claim 14 , wherein said pushing is carried out with an auxiliary device configured for that purpose. 
     
     
       16. The method of  claim 15 , wherein said auxiliary device has a circumferential annular, clot engaging member. 
     
     
       17. The method of  claim 16 , wherein said clot-engaging member has dimensions corresponding to those of the mold cavity for engaging the periphery of the molded blood clot. 
     
     
       18. The method of  claim 15 , wherein said member projects from a body of said device. 
     
     
       19. The method of  claim 14 , further comprising combining the blood clot onto a dressing material,
 wherein the mold cavity comprises a blood clot-support matrix and said extracting comprised removal of the clot with said matrix, 
 wherein said fixing is with a dressing material, 
 wherein the mold cavity comprises a blood clot-support matrix and said clotting cause said matrix to become integrated within the molded blood clot, and 
 wherein said extracting comprises removal of the clot with said matrix. 
 
     
     
       20. The method of  claim 14 , wherein at least one of (i) the walls of the mold cavity and (ii) the removable closure, is pierceable by a needle, wherein said introducing comprises piercing at least one of the wall and closure and injecting the blood therethrough, wherein the closure is a film that is removably adhered to rims of the enclosure walls, wherein the enclosure has the general shape of a blister, and wherein the enclosure is first pierced to form a vent and then the blood is injected into the enclosure.